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authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>2009-01-06 14:39:16 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-06 15:59:00 -0800
commit64cdd548ffe26849d4cd113ac640f60606063b14 (patch)
tree9a7a8af9022621d2da3648757b724fcd32b20168 /mm/rmap.c
parent1b0bd118862cd9fe9ac2872137a1b8107e83ff9d (diff)
downloadlwn-64cdd548ffe26849d4cd113ac640f60606063b14.tar.gz
lwn-64cdd548ffe26849d4cd113ac640f60606063b14.zip
mm: cleanup: remove #ifdef CONFIG_MIGRATION
#ifdef in *.c file decrease source readability a bit. removing is better. This patch doesn't have any functional change. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/rmap.c')
-rw-r--r--mm/rmap.c10
1 files changed, 3 insertions, 7 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index 10993942d6c9..53c56dacd725 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -50,6 +50,7 @@
#include <linux/kallsyms.h>
#include <linux/memcontrol.h>
#include <linux/mmu_notifier.h>
+#include <linux/migrate.h>
#include <asm/tlbflush.h>
@@ -818,8 +819,7 @@ static int try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
spin_unlock(&mmlist_lock);
}
dec_mm_counter(mm, anon_rss);
-#ifdef CONFIG_MIGRATION
- } else {
+ } else if (PAGE_MIGRATION) {
/*
* Store the pfn of the page in a special migration
* pte. do_swap_page() will wait until the migration
@@ -827,19 +827,15 @@ static int try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
*/
BUG_ON(!migration);
entry = make_migration_entry(page, pte_write(pteval));
-#endif
}
set_pte_at(mm, address, pte, swp_entry_to_pte(entry));
BUG_ON(pte_file(*pte));
- } else
-#ifdef CONFIG_MIGRATION
- if (migration) {
+ } else if (PAGE_MIGRATION && migration) {
/* Establish migration entry for a file page */
swp_entry_t entry;
entry = make_migration_entry(page, pte_write(pteval));
set_pte_at(mm, address, pte, swp_entry_to_pte(entry));
} else
-#endif
dec_mm_counter(mm, file_rss);